Infini-B is a comprehensive B-complex featuring premium forms of all eight essential B vitamins, including the neurotropic benfotiamine and methylcobalamin. This formula supports energy production from food, neurotransmitter synthesis, and metabolism, addressing the body’s constant need to replenish these water-soluble vitamins that cannot be stored long-term.
Our Infini-B Story
As supplement users ourselves, we constantly searched for a B-complex without compromises, but kept finding products with inferior forms, improper dosing, or both. Most manufacturers use poorly absorbed forms like cyanocobalamin or folic acid, while others sprinkle a few premium forms into formulas dominated by cheap alternatives. We wanted to create something different: a B-complex using only the most bioavailable and active forms of each vitamin.
Buy Infini-B Capsules Optimized Vitamin B Complex
We approached this methodically, selecting forms like P5P for B6, L-5-MTHF for folate, and dual forms of B12 for optimal utilization. Then came the challenge of proper dosing. B vitamins are notoriously over or under-dosed in most products, so we conducted extensive beta-testing to find the sweet spot where each vitamin delivers meaningful benefits without excess. The result is a formula that provides noticeable energy and cognitive support while maintaining perfect balance across all eight B vitamins.
Benefits
- Promotes Energy: Infini-B supports efficient conversion of carbohydrates, fats, and proteins into usable energy through optimized forms like P5P and riboflavin 5′-phosphate that enhance cellular ATP production.
- Supports Cognitive Function: The formula includes benfotiamine for enhanced blood-brain barrier penetration and L-5-MTHF calcium to support neurotransmitter synthesis including dopamine, serotonin, and acetylcholine.
- Mood Support: Contains methylcobalamin and hydroxocobalamin to support healthy methylation processes essential for neurotransmitter balance and emotional well-being.
- Metabolic Support: Features D-calcium pantothenate for coenzyme A production and no-flush niacin forms that support healthy cholesterol levels and cardiovascular function.
Infini-B’s formula addresses the interconnected nature of cellular processes, where proper methylation supports both mental clarity and physical vitality while maintaining healthy homocysteine levels already within the normal range. Buy Infini-B Capsules Optimized Vitamin B Complex, Promotes Energy, Supports Cognitive Function, Mood Support, Supports Metabolic Function
Quality and Standardization
- Premium Active Forms: We use the most bioavailable forms of each B vitamin we tested, including benfotiamine for enhanced brain penetration, P5P as the active B6, and L-5-MTHF calcium as the methylated folate that bypasses genetic conversion issues.
- Dual B12 Complex: Features both methylcobalamin and hydroxocobalamin to provide comprehensive B12 support, as these two forms work synergistically to optimize methylation pathways and neurotransmitter production.
- No-Flush Niacin Blend: Contains both niacinamide and inositol hexanicotinate for sustained NAD precursor delivery without uncomfortable flushing reactions, while maintaining full vitamin B3 activity.
- Optimized Biotin Dosing: Carefully dosed to support metabolism without the skin disruption that can occur with mega-dose biotin formulations found in many complexes.
- Beta-Tested Formula: Underwent extensive internal testing to verify optimal dosing ratios across all eight B vitamins, ensuring balanced effects without the energy crashes or overstimulation common with poorly formulated B-complexes. Buy Infini-B Capsules Optimized Vitamin B Complex, Promotes Energy, Supports Cognitive Function, Mood Support, Supports Metabolic Function
Mechanism of Action
- Enzymatic Cofactor Activation: B vitamins convert into their active coenzyme forms to power cellular energy production, with thiamine becoming thiamine diphosphate for glucose metabolism, riboflavin transforming into FAD and FMN for electron transport, and pantothenic acid generating coenzyme A for fatty acid oxidation and the citric acid cycle.
- Neurotransmitter Pathway Support: Multiple B vitamins work synergistically in neurotransmitter synthesis, with P5P catalyzing dopamine and serotonin production, methylcobalamin and folate supporting methionine recycling for SAMe-dependent reactions, and benfotiamine crossing the blood-brain barrier to enhance acetylcholine formation.
- Methylation Cycle Optimization: L-5-MTHF calcium and methylcobalamin directly participate in one-carbon metabolism, bypassing genetic polymorphisms that impair folate conversion while supporting DNA methylation, homocysteine metabolism, and SAMe regeneration for optimal cellular function.
- Mitochondrial Electron Transport Enhancement: Riboflavin 5′-phosphate serves as a precursor to flavoproteins that facilitate electron transfer in Complex I and II of the mitochondrial respiratory chain, while niacinamide supports NAD+ synthesis essential for oxidative phosphorylation and cellular energy currency production. Buy Infini-B Capsules Optimized Vitamin B Complex, Promotes Energy, Supports Cognitive Function, Mood Support, Supports Metabolic Function
Overview of the Science
B vitamins function as essential cofactors in enzymatic reactions that regulate cellular energy metabolism and neurotransmitter synthesis [1]. Research indicates that B vitamin deficiencies can significantly impair cognitive performance, with studies showing that supplementation with bioavailable forms like those in Infini-B supports memory formation, mental clarity, and overall brain function [2][3]. Vitamin B12 specifically supports nerve repair and promotes functional recovery by inhibiting endoplasmic reticulum stress-induced neuron injury [4]. Additionally, B vitamins play crucial roles in myelin maintenance and repair, which is essential for proper nerve signal transmission and cognitive health [5].
Clinical trials demonstrate that B complex supplementation can reduce fatigue and improve exercise performance in healthy individuals, supporting the energy-promoting effects users experience with Infini-B [6]. Studies highlight the role of B vitamins in supporting mood balance and cognitive function, with deficiencies linked to mood disturbances, age-related cognitive changes, and memory impairment [7][8][9]. Research specifically highlights the role of B vitamins in supporting cognitive function, particularly in areas of executive function and processing speed [10].
Buy Infini-B Capsules Optimized Vitamin B Complex
[1] Stremmel C, Hanning U, Möhring A, et al. B Vitamins in the nervous system: Current knowledge of the biochemical modes of action and synergies of thiamine, pyridoxine, and cobalamin. Biomed Res Int. 2019;2019:9968228.
[2] Kennedy DO. B Vitamins and the Brain: Mechanisms, Dose and Efficacy—A Review. Nutrients. 2016;8(2):68.
[3] Baltrusch S. The Role of Neurotropic B Vitamins in Nerve Regeneration. BioMed Res Int. 2021;2021:9968228.
[4] Wu M, Ding H, Tang X, et al. Vitamin B12 Enhances Nerve Repair and Improves Functional Recovery After Traumatic Brain Injury by Inhibiting ER Stress-Induced Neuron Injury. Front Neurosci. 2019;13:406.
[5] Miller A, Korem M, Almog R, Galboiz Y. Vitamin B12, […], remyelination and repair in […]. J Neurol Sci. 2005;233(1-2):93-7.
[6] Patel A, Hou W, Sajjan S. A functional evaluation of anti-fatigue and exercise performance improvement following vitamin B complex supplementation in healthy humans, a randomized double-blind trial. Int J Med Sci. 2023;20(10):1275-1289.
[7] Han A, Almeida L, Anand N, et al. Exploring neuropsychiatric manifestations of vitamin B complex deficiencies. Front Psychiatry. 2025;16:1569826.
[8] Ankar A, Kumar A. Low Vitamin B12 Levels: An Underestimated Cause Of Minimal Cognitive Impairment And […]. Cureus. 2020;12(2):e6976.
[9] Boccazzi A, Argento O, Petrucci L, et al. Vitamin B12 deficiency and cognitive impairment: Is there a distinctive cognitive domain affected? […] Dement. 2023;19:e073432.
[10] Morris MS. The Role of B Vitamins in Preventing and Treating Cognitive Impairment and Decline. Adv Nutr. 2012;3(6):801-812.
Ingredients
Frequently asked questions
How much Infini-B should I take daily?
Take one capsule daily, preferably in the morning to support energy production throughout the day. Our formula provides optimal doses of all eight essential B vitamins in highly bioavailable forms for comprehensive B-complex support.
Can I stack Infini-B with other nootropics?
Yes, Infini-B stacks well with other nootropics as B vitamins are cofactors for neurotransmitter synthesis and cellular energy. Take it in the morning to support your choline sources, adaptogens, and other supplements throughout the day.
When should I take Infini-B for best results?
Take Infini-B in the morning for optimal results, as B vitamins support energy production and can be stimulating if taken later in the day. Our Infini-B can be taken with or without food, and you’ll typically notice immediate effects with full benefits developing over 1-2 weeks of consistent use.
Why choose Nootropics Depot’s Infini-B over other B-complexes?
Our Infini-B uses superior, highly bioavailable forms of all eight B vitamins, including benfotiamine instead of cheap thiamine mononitrate and methylcobalamin instead of cyanocobalamin. Most B-complexes cut corners with poorly absorbed forms or improper dosing ratios that create imbalances.
What does Niacinamide do?
Niacinamide (vitamin B3) supports cellular energy production and cognitive function as a precursor to NAD+. Our Infini-B includes it as part of a B-complex that supports energy metabolism and neurotransmitter synthesis.
What is Niacinamide good for?
Niacinamide (vitamin B3) supports energy production, brain function, and skin health as a precursor to NAD+. Unlike niacin, it delivers the same B3 benefits without causing flushing.
What is Thiamine?
Thiamine is vitamin B1, an essential water-soluble cofactor in energy metabolism and nervous system function that the body cannot store long-term. Our Infini-B uses benfotiamine, a highly bioavailable thiamine form that supports cellular energy and neurological health.
How much Infini-B should I take daily?
Take one Infini-B capsule daily with your morning routine, with or without food. Most people notice immediate effects with full benefits developing over 1-2 weeks. Buy Infini-B Capsules Optimized Vitamin B Complex, Promotes Energy, Supports Cognitive Function, Mood Support, Supports Metabolic Function





Jason Masangkay –
Perfect Formulation
Over the last 20 years, Ive learned the hard way with myself and clients that almost every B Complex on the market is overdosed in everything and if not overdosed in everything Theure overdosed in the things that almost no one needs. In my case it’s B6. Almost every formulation has 5-10x more than I can tolerate. This formulation is perfect for me and perfect for 90% of the hundreds of clients Ive helped over the years. If you’ve tried other B Complex and find you’re not getting proper booodwork or feel off, this may be the answer. Give it 6-8 weeks.
John –
Spectacular!
Better product than most Ive tried in the past without the neon yellow urine to follow. The methylated versions jsut work better
Os –
Terrific!
More quality supplements from Nootropics. For tested and trusted products, Nootropics Depot is awesome.
Carrie P –
You should get this!
Excellent source for my weekly dose of B-vitamins